Sarcopenic obesity does not impair lower limb strength and physical performance in sufficiently active older adults: a cross-sectional study.

This study investigated the associations of sarcopenic obesity (SO) with muscle strength and physical performance in sufficiently active older adults. Data from 72 older sarcopenic obese adults classified as sufficiently active were analyzed. Participants were categorized into four groups based on sex and SO status. Muscle strength/physical performance tests were compared using independent sample t-tests. Multiple linear regression and binary logistic regression were performed to examine the associations between SO and muscle strength and physical performance, adjusting for confounding variables. Only handgrip strength showed differences between SO groups, regardless of sex (p < 0.05). SO negatively explained the variability of handgrip strength (p < 0.05). An increase in handgrip strength values was associated with a decrease in the chances of older adults being classified as SO (p < 0.05). The findings suggest that even with SO, sufficiently active older adults did not present a significant reduction in muscle strength in the lower limbs and physical performance.

Multicompartment body composition analysis in older adults: a cross-sectional study.

BACKGROUND: During aging, changes occur in the proportions of muscle, fat, and bone. Body composition (BC) alterations have a great impact on health, quality of life, and functional capacity. Several equations to predict BC using anthropometric measurements have been developed from a bi-compartmental (2-C) approach that determines only fat mass (FM) and fat-free mass (FFM). However, these models have several limitations, when considering constant density, progressive bone demineralization, and changes in the hydration of the FFM, as typical changes during senescence. Thus, the main purpose of this study was to propose and validate a new multi-compartmental anthropometric model to predict fat, bone, and musculature components in older adults of both sexes. METHODS: This cross-sectional study included 100 older adults of both sexes. To determine the dependent variables (fat mass [FM], bone mineral content [BMC], and appendicular lean soft tissue [ALST]) whole total and regional dual-energy X-ray absorptiometry (DXA) body scans were performed. Twenty-nine anthropometric measures and sex were appointed as independent variables. Models were developed through multivariate linear regression. Finally, the predicted residual error sum of squares (PRESS) statistic was used to measure the effectiveness of the predicted value for each dependent variable. RESULTS: An equation was developed to simultaneously predict FM, BMC, and ALST from only four variables: weight, half-arm span (HAS), triceps skinfold (TriSK), and sex. This model showed high coefficients of determination and low estimation errors (FM: R2adj: 0.83 and SEE: 3.16; BMC: R2adj: 0.61 and SEE: 0.30; ALST: R2adj: 0.85 and SEE: 1.65). CONCLUSION: The equations provide a reliable, practical, and low-cost instrument to monitor changes in body components during the aging process. The internal cross-validation method PRESS presented sufficient reliability in the model as an inexpensive alternative for clinical field use.

Relación entre parámetros cardiovasculares y el Índice de Masa Corporal en mujeres perimenopáusicas / Relationship between cardiovascular parameters and body mass index in perimenopausal women

Introducción: Las enfermedades cardiovasculares (ECV) son la causa de muerte más frecuente en las mujeres en todo el mundo. La deficiencia de estrógenos debido a la menopausia se asocia con un mayor riesgo a padecer esta patología.Objetivo: Analizar los factores de riesgo cardiovascular en mujeres perimenopausicas con al menos un factor de riesgo cardiovascular modificable mayor (diabetes, hipertensión, dislipemia) con edades comprendidas entre los 45 y 60 años de dos servicios de atención primaria urbanos.Metodología: Estudio descriptivo transversal en dos centros de salud de la ciudad de Ourense (Centro de Salud Novoa Santos y Centro de Salud A Ponte). Las variables analizadas fueron: Actividad estrogénica, tratamiento farmacológico, hábito tabáquico, calidad de vida, índice de masa corporal (IMC), colesterol total, lipoproteína de alta densidad (cHDL), lipoproteína de baja densidad (cLDL) y triglicéridos, tensión arterial sistólica (TAS), tensión arterial diastólica (TAD), frecuencia cardíaca (FC). El estudio contó con la aprobación del Comité Ético de Galicia. El análisis de los datos se efectuó a través del software libre R.Resultados: Participaron 316 mujeres, de las cuales el 64,9% eran menopáusicas. La edad media de la muestra fue de 53,35 ± 4,35 años. El valor medio del IMC fue de 28,125 ± 5,54 Kg/m2. Un 27,8% afirmó presentar hábito tabáquico. El 77,2% de las mujeres de la muestra presentaban niveles de colesterol total ≥200 mg/dl. En relación al cLDL, en el 72,6% de la población estudiada era ≥130 mg/dl. Se observó una correlación estadísticamente significativa entre el IMC y los niveles de triglicéridos, cHDL, TAS, TAD y FC.Conclusiones: Las mujeres perimenopáusicas presentaban una elevada prevalencia hábito tabáquico, obesidad y sobrepeso, a pesar de sufrir al menos un factor de riesgo cardiovascular. Por otra parte mostraron una baja calidad de vida tanto en la dimensión física como mental

Introduction: Cardiovascular disease (CVD) is the most common cause of death in women worldwide. Estrogen deficiency due to menopause is associated with an increased risk of this pathology.Objective: To analyze cardiovascular risk factors in perimenopausal women with at least one major modifiable cardiovascular risk factor (diabetes, hypertension, dyslipemia) between the ages of 45 and 60 of two urban primary care services.Methodology: Cross-sectional descriptive study in two health centers in the city of Ourense (Novoa Santos Health Center and A Ponte Health Center). The variables analyzed were: estrogenic activity, pharmacological treatment, smoking habit, quality of life, body mass index (BMI), total cholesterol, high density lipoprotein (cHDL), low-density lipoprotein (cLDL) and triglycerides, systolic blood pressure (TAS), diastolic blood pressure (TAD), heart rate (FC). The study was approved by the Ethics Committee of Galicia. Data analysis was performed through the free R software.Results: 316 women participated, of whom 64.9% were menopausal. The average age of the sample was 53.35 ± 4.35 years. The average BMI value was 28,125 ± 5.54 Kg/m2. 27.8% said they had a smoking habit. 77.2% of the women in the sample had total cholesterol levels ≥200 mg/dL. In relation to the cLDL, in 72.6% of the population studied it was ≥130 mg/dL. A statistically significant correlation was observed between BMI and triglyceride, cHDL, TAS, TAD and FC levels.Conclusion: Perimenopausal women had a high prevalence of smoking habit, obesity and overweight, despite suffering at least one cardiovascular risk factor. On the other hand they showed a low quality of life in both the physical and mental dimensión.

EPIDEMIOLOGIA E ETIOLOGIA DAS LESÕES EM CANOÍSTAS DE ALTO NÍVEL / EPIDEMIOLOGY AND ETILOGY OF INJURIES IN HIGH-LEVEL KAYAKERS

RESUMO Nesta pesquisa descritiva de retrospectiva transversal, analisamos as lesões mais frequentes em atletas canoístas de águas calmas. Contamos com a participação de 362 canoístas,que responderam a um questionário sobre lesões. Obtivemos um índice de lesões nos canoístas homens de 1,43 e nas mulheres de 1,50; 53,9% foram lesões do tipo leve. As lesões nos ombros atingiram 32% nos homense 42,7% nas mulheres. Encontraram-se diferenças significativas (p<0,01) nos homens em relação à duração do treinamento e também às horas dedicadas a dormir. A metade dos homens e das mulheres lesionados pertencia à etapa de14-16 anos, sendo a lesão por uso exagerado a mais frequente. Saber das lesões de canoístas é fundamental para a organização de esquemas preventivos adequados. Este estudo estabelece quais são as lesões mais frequentes em canoístas de águas calmas atualmente, aportando informações sobre os fatores relacionados a elas e sua prevenção.

ABSTRACT In this descriptive and transverse retrospective study, we analyzed the most frequent injuries in flatwater kayakists. 362 kayakists participated, which answered to an adapted questionnaire of injuries.The index of injuries obtained in the men was of 1.43 and in the women of 1.50; that 53.9 % were light. The injuries in the shoulders supposed 32 % in the men and 42.7 % in the women. We found significant differences (p <0,01) in the men in relation to the duration of the training, and to the hours dedicated to sleeping The half of the men and women injured,corresponded to 14-16 years, being the overuse injury the most frequent. To know the flatwater kayakists injuries is fundamental for the organization of suitable preventive schemes. This study stablish which are the most frequent flatwater kayakists injuries actually, contributing information about the factors related to them and to their prevention.